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Finding the Fourth Proportional to 247,210.80, 370,816.20 and 217,686.30

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Solution

The fourth proportional to 247,210.80, 370,816.20 and 217,686.30 is: 326,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,210.80 : 370,816.20 = 217,686.30 : x
  2. Step 2: Convert to fraction form
    247,210.80/370,816.20 = 217,686.30/x
  3. Step 3: Cross multiply
    247,210.80x = 370,816.20 × 217,686.30
  4. Step 4: Simplify right side
    247,210.80x = 80,721,606,558.06
  5. Step 5: Solve for x
    x = 80,721,606,558.06/247,210.80
  6. Step 6: Final answer
    x = 326,529.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.